A car FM transmitter with Bluetooth is an indispensable gadget for every driver who cares about comfort and safety while driving. Allows you to transfer music from your smartphone to a car audio system. You can use it as a handsfree. Designed for cars equipped with Bluetooth module and MP3 decoder. The built-in microphone allows you to talk while driving safely, and the CVC technology and noise reduction system ensures high sound quality. The A2DP function allows you to send and receive high-quality audio content. Transmitter plays files from external media stored in MP3 / WMA format, and it is compatible with car chargers with 5V-1000 mA output voltage. Product Specification Bluetooth version: V3.0 + EDR Frequency response: 20 Hz - 20 kHz Sound level: -42db + / 3 db 360 Voltage: 5V +/- 0.5V Run time: 45 mA (max) Waiting time: 25 mA (max) Frequency: 2.40 ~ 2.480 GHz Coverage: 5 meters Sensitivity: -92 dBm RF input: 4 dBm FM: 87.5 MHz - 108.0 MHz Signal strength: 87 dBuv / 107 dBuv Coverage: 2 meters